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1 package org.apache.turbine.services.assemblerbroker.util.java; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import java.util.Vector; 58 import org.apache.turbine.modules.Assembler; 59 import org.apache.turbine.modules.GenericLoader; 60 import org.apache.turbine.services.assemblerbroker.util.AssemblerFactory; 61 import org.apache.turbine.services.resources.TurbineResources; 62 import org.apache.turbine.util.ObjectUtils; 63 64 /*** 65 * A screen factory that attempts to load a java class from 66 * the module packages defined in the TurbineResource.properties. 67 * 68 * @version $Id: JavaBaseFactory.java,v 1.1.1.1 2001/08/16 05:08:48 jvanzyl Exp $ 69 */ 70 public abstract class JavaBaseFactory implements AssemblerFactory 71 { 72 </*** A vector of packages *//index/html">color="#AA0000">* A vector of packages *//index.html">font color="#AA0000">/*** A vector of packages *//index.html">color="#AA0000">* A vector of packages */ 73 private static Vector packages = 74 TurbineResources.getVector("module.packages"); 75 76 static 77 { 78 ObjectUtils.addOnce( packages, 79 GenericLoader.getBasePackage() ); 80 } 81 82 publicAssembler getAssembler( String packageName, String name )/index.html"> Assembler getAssembler( String packageName, String name ) 83 { 84 Assembler assembler= null; 85 86 for (int i=0; i<packages.size(); i++) 87 { 88 String className = ((String) packages.elementAt(i) + 89 "."+packageName+"." + 90 name); 91 try 92 { 93 Class servClass = Class.forName( className ); 94 assembler = ( Assembler ) servClass.newInstance(); 95 return assembler; 96 } 97 catch (ClassNotFoundException cnfe) 98 { 99 // Do this so we loop through all the packages. 100 } 101 catch (NoClassDefFoundError ncdfe) 102 { 103 // Do this so we loop through all the packages. 104 } 105 catch (ClassCastException cce) 106 { 107 // This means trouble! 108 // Alternatively we can throw this exception so 109 // that it will appear on the client browser 110 return null; 111 } 112 catch (InstantiationException ine) 113 { 114 // This means trouble! 115 // Alternatively we can throw this exception so 116 // that it will appear on the client browser 117 return null; 118 } 119 catch (IllegalAccessException ilae) 120 { 121 // This means trouble! 122 // Alternatively we can throw this exception so 123 // that it will appear on the client browser 124 return null; 125 } 126 127 // With ClassCastException, InstantiationException we hit big problems 128 } 129 return assembler; 130 } 131 132 }

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